| 摘要 |
<p>Said system comprises an insulated access door (6) which closes the chamber (4) by interacting against a frame (1) mounted above the entrance (2) of said chamber (4), and a fast-opening door consisting of a displaceable plate (8) and corresponding actuation means (9, 10). Said actuation means are mounted outside the chamber (4), The frame (1) has a longitudinal groove (7) allowing passage of the plate (8), said plate (8) closing the insulated door (6) in the front or in the back. The system also includes a shutting device (7) which closes the groove (7) to minimize temperature loss through said groove and means (71 and 161) for heating the groove (7), in addition to guides (16) on which the plate (8) is displaced to open or closed position.</p> |
